private void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
PrinterSettings printerSettings = new PrinterSettings();
LocalPrintServer printerServer = new LocalPrintServer();
while (!backgroundWorker.CancellationPending)
{
//Windows check
using (var searcher = new ManagementObjectSearcher
("SELECT * FROM WIN32_Printer"))
{
var printers = searcher.Get().Cast <ManagementBaseObject>().Where(p => p["DriverName"].Equals("MS-D347")).ToList();
var defaultPrinterName = printerSettings.PrinterName;
var defaultPrinter = printers.Where(p => p["Name"].Equals(defaultPrinterName)).FirstOrDefault();
bool Offline = (bool)defaultPrinter["WorkOffline"];
if (!Offline)
{
//Printer online
//Print Job != 0 error
var queue = printerServer.DefaultPrintQueue;
if (queue.NumberOfJobs != 0)
{
StatusChanged(MSD347SDK.Status.PRINTER_JOBS_QUEUE_NOT_EMPTY, "Jobs: " + queue.NumberOfJobs, Source.System);
}
//SDK Init
if (CheckBySdk)
{
if (SDKLastStatus.Equals(MSD347SDK.Status.PRINTER_IS_OFFLINE))
{
try
{
//if (MSD347SDK.SetClean() != 0)
//{
// Debug.WriteLine("SetClean error");
//}
if (MSD347SDK.SetClose() != 0)
{
Debug.WriteLine("SetClose error");
}
if (MSD347SDK.SetUsbportauto() != 0)
{
Debug.WriteLine("SetUsbportauto error");
}
if (MSD347SDK.SetInit() != 0)
{
Debug.WriteLine("SetInit error");
}
}
catch (Exception ex)
{
Debug.WriteLine("Exception: {0}", ex.ToString());
}
}
//SDK status
var statusCode = MSD347SDK.GetStatus();
SDKLastStatus = MSD347SDK.GetStatusByCode(statusCode);
if (SDKLastStatus.Equals(MSD347SDK.Status.PRINTER_IS_READY))
{
StatusChanged(MSD347SDK.Status.PRINTER_IS_READY, "", Source.System);
}
else
{
StatusChanged(SDKLastStatus, "", Source.SDK);
}
}
Debug.WriteLine("{0} online, status by sdk: {1}", defaultPrinter["Name"], SDKLastStatus);
}
else
{
StatusChanged(MSD347SDK.Status.PRINTER_IS_OFFLINE, "", Source.System);
Debug.WriteLine("{0} offline", defaultPrinter["Name"]);
if (AutoDetectDriverOnline)
{
foreach (var p in printers)
{
if (!(bool)p["WorkOffline"])
{
var Name = p["Name"].ToString();
SetDefaultPrinter(Name);
StatusChanged(MSD347SDK.Status.PRINTER_DRIVER_CHANGED, "", Source.System);
Debug.WriteLine("{0} is set as the default printer", Name);
}
}
}
}
}
Thread.Sleep(500);
}
}
private void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
StatusChanged(Status.WORKER_STARTED, "");
while (!backgroundWorker.CancellationPending)
{
//SDK Check
if (SDKLastStatus.Equals(MSD347SDK.Status.PRINTER_IS_OFFLINE))
{
try
{
if (MSD347SDK.SetClean() != 0)
{
StatusChanged(Status.SDK_CLEAN_ERROR, "");
}
if (MSD347SDK.SetClose() != 0)
{
StatusChanged(Status.SDK_CLOSE_ERROR, "");
}
if (AutoUsbport)
{
if (MSD347SDK.SetUsbportauto() != 0)
{
StatusChanged(Status.SDK_SET_USB_AUTO_PORT_ERROR, "");
}
}
else
{
if (MSD347SDK.SetPrintport(UsbPort, Baudrate) != 0)
{
StatusChanged(Status.SDK_SET_PRINT_PORT_ERROR, "");
}
}
if (MSD347SDK.SetInit() != 0)
{
StatusChanged(Status.INIT_PRINTER_ERROR, "");
}
}
catch (Exception ex)
{
StatusChanged(Status.INIT_PRINTER_ERROR, ex.ToString());
}
}
var statusCode = MSD347SDK.GetStatus();
//if (!LastStatus.Equals(MSD347SDK.GetStatusByCode(statusCode)))
//{
// PrinterStatusChanged(MSD347SDK.GetStatusByCode(statusCode), "");
// LastStatus = MSD347SDK.GetStatusByCode(statusCode);
//}
PrinterStatusChanged(MSD347SDK.GetStatusByCode(statusCode), "");
SDKLastStatus = MSD347SDK.GetStatusByCode(statusCode);
Thread.Sleep(1000);
}
}